Delinting device for drying machines



Feb. 10, 1931. R. c. PAULY DELINTING DEVICE FOR DRYING MACHINES FiledSept. 14. 1925 4 Sheets-Sheet 1 Z 50 1%vg1% TOR A TTORNEY J Feb. 10,l931. R. c. PAULY 1,791,574

DELINTING DEVICE FOR DRYING MACHINES Filed Sept. 14, 1925 "4Sheets-Sheet 2 IN VEN TOR BY M Feb. 10, 1931. c, PAULY 1 ,791,574

. DELINTING DEVICE FOR DRYING MACHINES Filed Sept. 14, 1925 4Sheets-Sheet 3 I i i l l Mir-11m i l5;/ t L [NIZ'AOR My I BY Maw: I

' k if ATTO \NEYJ Feb. 10, 1931. R. c. PAULY 1,791,574

DELINTING DEVICE FOR DRYING MACHINES Filed Sept. 14, 1925 4 Sheets-Sheet4 79 5/ i Q TWQ 50 v AT ORNEYJ Patented Feb. 10, 1931 E TA T .8

ROBERT .C. PAULY, OF CINCINNATI, OHIO, ASSIGNOR TO THE AMERICAN LAUNDRYEQACHINERY COMPANY, OF. CINCINNATI, OHIO, A CORPORATION OF OHIOIDELINTING DEVICE FOR DBYlNG IYIACHIITES Application filed September 14,1935. Serial No. 56,336.

This invention relates to improvements in delinting devices for dryingmachines used in connection with laundry, etc.

One object of the present invention is to provide such a device in whichthe delinting means is entirely enclosed within the casing and in whichmeans is provided for re- -moving the lint from the lint-collectingscreen and depositing the lint in a container from which the lint may beremoved from time to time as may be necessary.

More specifically, it is the object of the present invention to providea traveling wiper or wipers which are adapted to engage thelint-collecting screen so as to deposit the lint into a container forremoval.

Still more specifically, it is my object to provide such a wiper orwipers which are adapted to co-operate with other means so as to causethe lint to become packed in the container and at the same time toprevent the lint from being carried past the container and throu h themachine.

It is another object to provide a number of such wipers upon an endlesstraveling chain so as to have at least one of them always in wipingengagement with the screen, and also to provide means for adjusting theindividual wlpers so as to always effect proper wiping engagement withthe screen.

A further object of this invention consists in providing means forautomatically producing a signal to indicate when the lint collector orcontainer has been filled and to provide also means for automaticallystopping the operation of the fan of the drying machine as well as themovement of the wipers in case the signal just referred to should gounheated and the lint should be permitted to collect still further inthe container.

Another object consists in providing means for preventing formation ofpockets within which the lint might collect and in this way fail to beremoved. A still further object consists in providing means forpreventing collection of lint upon the sprocket wheels of the chainwhich carries the wipers.

Other objects will appear from. the following description and claimswhen considered together withthe accompanying drawings.

Fig. l is afront view of my improved device with parts broken away; Fig.2 1s a detail view showing one of the wipers and also one of :the'platesto prevent collection of the lint withina pocket or corner of themachine; Fig. 3 is a detail View showing the manner of mounting thewipers upon the sprocket chain; Fig. 4 is a detail view illustrating thewipers for preventing collection of lint upon the sprocket wheels; Fig.5 1s a vertical cross sectional view of the entire device showing therelative arran ement of the several Jarts h 7 Fig. 6 shows the wiperfelt in perspective withthe slot for permitting adjustment; Fig. 7 is adetail view of a deflector plate arranged at the door of the casing soas to prevent escape of lint therefrom Figs. 8 and 9 are detail viewstaken at 90 to each other and showing theoperating mechanism for thesprocket chain which carries the wipers; Figs. 10 and 11 aredetail viewstaken at 90 to each other and illustrating the means for automaticallysignalling the operator and stopping the 0perationof the entire device;and Fig. 12 is an electric diagram of the automatic signalling andstopping arrangement.

The drying machine here illustrated includes a casing 1 provided withthe door 2 hinged across the front thereof so as to permitaccess to themachine interior. Arranged within a suitable chamber within the casing 1is a tumbler in the form of a screened cylinder which is adapted to berotated by an electric motor 3 (shown in Fig. 12) in the well knownmanner and in which are con tained the materials to be dried.

The casing is subdivided by suitable partitions, as indicated in Fig. 5,forming a heating chamber-5 within which the heating coils showna-re'located, a fan housing 66 enclosing the rotary fan 6 which isarranged to deliver air into .the heating chamber 5, an air inletchamber 60 and an exhaust chamber 8. The air inlet chamber 60communicates with the fan chamber through the usual endwise opening (notshown), and said fan chamber also communicates by way of a relativelysmall opening with the exhaust chamber 8. By this construction, whichwill be recognized as old in the art a recirculation circuit isestablished by operation of the fan, air p nn; from the fan housing 671,through ing chamber 5, up around the tuinbn ing, dowmvardly through theopenin 3a above the tumbler. through the tumbler, downwardly through theoutlet opening 31) in the tumbler housing, downwardly through the screen7 into the air inlet chamber and thence again endwise into tl e fanhousing 67). A relatively small portion of the recirculated air will becontinuously exhausted by way of the exhaust chamber 8 and approximatelya corresponding amount of fresh air will be continuously drawn into thechamber 60 through the opening Go, all as will be readily understood byone familiar with the art.

Extending across the entire width of the machine casing and located justinside of the front of the casing, there is provided an inclineddeflector plate 10 having its lower edge portion bent to an angular formand suitably secured in such position. The upper edge portion of thisdeflector plate is provided with the felt strip 11 which engages theinnersurface of the door 9 so as to thereby prevent escape of lint outpast the door and at the same time to serve to deflect the lint into thezone of the screen 7 so as to be all caught thereby in the mannerintended.

As a means of operating the fan and wipers, there is provided theelectric motor 5 with the belt 13 which by means of suitable pulleysdrives the shaft 14 extending across the front part of the machinecasing at the bottom part thereof. The fan 6 is mounted upon the shaft14 so as to be d iven thereby, while the other end of this shaft extendsout beyond the main part of the machine casing so as to drive othermechanism which is enclosed within an auxiliary casing and whichincludes shaft 17 This shaft 17 carries the worm 18 meshing with thegear 19. Mount ed upon the shaft of the gear 19 there is provided thesprocket 20 which by means of the sprocket chain 21 drives the gear 22and the sprocket 23 which is mounted upon the shaft of the gear 22.Mounted within the casing and at the opposite or left hand side thereofthere is provided the idler sprocket 24 which is companion to thesprocket 23 and about which there extends the sprocket chain 25 so as tobe driven by the mechanism just now described. This sprocket chain 25extends just above the screen 7 and carries the felt wipers I 26 whichare so constructed and arranged as to have effective wiping engagementacross the entire upper side of the screen 7 during operation of themechanism just referred to. Any desirable or suitable number of suchwipers may be employed, but according to the present illustration thereis provided just a sufficient number of such wipers to always have oneof them in engagement with the screen. The lint upon being removed bythe wipers is deposited into the container 27 which is slidably mountedjust beyond the end. of the screen 7, as shown in Fig. 9.

There is provided also across the top of the container 27 a memberhaving an upwardly inclined lip portion 28 which is adapted to beengaged by the wipers 26 so as to ensure the lint being discharged ordeposited into the container and not carried past the container, andscattered through the machine. The effect of such engagement between thewiper and the lip 28 is to also cause more or less packing of the lintwithin the container.

The s iroeket wheels are slidably mounted by s of the blot-as and slotsillustrated in F1 2, as to be slidably adjustable in the ii portingbrack 29 which are suitably mounted on the inner wall of the easg. Bymeans of set screws 30 which e2:- tend through the bra ekets 29 andengage the idablc blocks upon which the sprocket wheels are mounted,there can be effected any necessary adjustment of the sprocket wheels asto maintain the proper degree of tardiness in the spree ct chain.Rockably in ed upon the aux ry casing 15 is the bracket arm whichcarries the idler sprocket 555 to serve as a take-up for the slackness fthe sprocket chain lilounted also upon bar 29 of the bracket 29 are theow felt strips which are so arranged on: e the opposite sides of thesprocket and in this way prevent accumulalint between the teeth thereof.These 31 felts may be mounted in any suitable ner, for instance by meansof angular strips 32 and the plates 33 upon the opposite sid s thereof.lhe felts 26 are mounted upon the sprocket chain by means of inwardlyextending bracket arms which are cured to the links of the same, asillustrated in 3, and Ul Cll are adapted to support at their inner onesthe angular strips 35 between which the wiper felts are clamped by meansof screw bolts 36. The felts a re slotted, as illustrated at 3"? so asto permit adju tment of the same to take up wear, this being readilyaccomplished by means of the screw bolts 36. The resilient metal s ieets38, which are secured upon the one side of the felts by means of thesame screw bolts 36., will bend and thus during operation of the devicewill ensure uniform and effective engagement of the felts with thesurface of the screen. The sheets in this case are of sufficientresilience to maintain the felt vipers normal to the chain when they areidle.

The shaf 39 extends across and is mounted within the container 2". at apoint near the bottom thereof and to one side so as to have rockahlemovement therein. This shaft has lxed thereupon the bottom plate orshelf 40 of the electric light 52 which is adapted to o v operated as asignal when the weight oi th which is adapted to he swung downwardlywhen the load in the container reachesa certain predetermined point. T1e adpistable springs ll are arranged between the downwardly extendingprojections on t e ear-- or" shaft 39 and the wall of the ccinai llvforce the nv M ough one openiug e in the wall of the container is thearm or rried by the plate other U v i I Z- llilu. anangcdso as LO have iend engaging under the arm whicn of which are provided the electriccontacts 49 and 50 respectively. The inner or ad jacent ones of me twocorresponding pairs of contacts-49 and 5O are connected by means ofelectric conductor 51.

The contacts L9 are included in the circuit load in thelintcontainer'reaches a certain predetermined point. This is effected bydepression of the plate 40 so as to etlect closing or" the circuitthrough the contacts by means of the mechanism just now described. Incase howeversuch signals should not he heeded by the operator, whopermits the device to continue operation'and the lint to still collectin th container, then turtl er lowering movement of the plate l0 willcause the further roclrin movement of thearm 45 so as to close thecircuit acrosstne contacts SO -by means of the contact arm 50,automatically cutting out and stopping both or" the motors will he morethoroughly understood by reference to the' ele'ctrical d1- agram in Fig.-12.

Referring to Fig.12, it will he seen that upon momentary depression oithe switcl button 53, there will he completed a circuit from the mainline L through the wire 54, switch 53, wire 55, switch 56, wire5?,switch 58, coil 59 and out through wiretJO to the other side-ofthemain lineL2. 'Upon' energization of the coil 59,-theci-rcuit-isclosedthrough contacts 61 and 62. Then the-circuit through the motor 63 icompleted from the main line L through the wire 6%, switch 62, wire 65,driving motor 3% wire the other side of mainline L At the same time amaintaining circuit is closed from one side of the main line L"throughthe wire 64-, contact'62, contact 61. wire 6?, switch wire 5?, switch58, coil 59, and out through wire 60 to the other side of the mainlineLFZ. Thus without holding the switch closed any longer thanmomentarily, the circuit throw driving motor 3a is established and main-'tained closed so long as maybe desired by the operator or until themotor circuit is automatically opened bymeans ofthearrangeuncritahovereferred'to. The circuit may of course he opened at'any time by theoperator hyineans oi manualswitch 56.

Likewise the fan motor 5o may be started by depressing momentarily theswitch-'69 so 13 to close the circuit from the main line L through'wire70, closed switch 69, wire 71, closed switch 72, wire 73, closed switch74, wire 75, coil 76, and out through the wire 7 7 to the'other side ofthe main line L2. Energization of coil 76 will effect the closing ofswitches 7 8 and 7 9 with'the result thatthe circuit through motor 5a isclosed from the one side of the main line L through the wire 80, closedswitch 7 9, wire 81, motor 56; and through the wire 82 to the other sideof the main line L2. Likewise the maintaining circuit is closed from theone side of the main line L, through wire- 70, closed switch 69, wire71, wire 83, closed switch 78, coil 76, and through wire 77 to the otherside of the mainline L2. The operation of motor 5a may alsolie-interrupted at any time by manually opening switch 69.

During operation of the lint removing device in case the bottom plate 40should be actuated by the weight o'fthe lint, the circuit throughcontacts 49a willthen'he con pleted and there will he established thecircuit from the'one sideof the'main'line L,

throughwire 84, closed contact-s 49a, wire 85, and through the lamp 52tothe other side of the main line L2. Then in case this'signal is notheeded by the operator who fails to empty the container, theaccumulation of further'weight of lint upon the plate 4:0 will causeactuation of the arm 48 so as to'completethe'circuit across thecontacts'oO Then thereis established the circuit from one side oft-hemain line L through wire '84, one of contacts 49, electric conductor 51,closed contacts 50a, wire 86, coil 87, and out through the wire 88 tothe other side or the main line The 'energization of coil 87 causesswitches 58 and 74 to both be operated'automatically, with theresult'tha't the maintaining circuits through coils 59and 76 are bothbroken, andconseque'ntly the circuits through hoth motors 3 and 5are'also br'okenfa's will be readily understood. Thus the machine isautomatically stopped in its operation to await removal an'd emptyingofthe lint container. l Vith the empty container restored to positionin'the machine, the plate 40 will occupy horizontal position, asillustrated in Fig. 11.

Thus I have'provided a lint collecting and dlscharging device which,except for the contamer, and drlvlng mechanism is entlrely enclosedXvithin the machine casing and in which the lint is effectively'andcontinuously removed from the screen during'the operation of themachine. This lint is deposited in an etticient manner in a removablecontainer and means are provided for automati-cally i (m ruu rsignallingthe operator when a certain amount of but has been so depos1ted.Furthermore,

the machine will automatically be stopped in case attention is not givento the emptying of the container at such time. Furthermore, I haveprovided an improved wiping device for removing the lint from the screenwith means for adjusting the several parts and thereby increasing theefficiency. By keepm the screen clean, there 18 maintained an efficientcirculation of air with the result that the drying of the materials iscarried on most effectively, throughout the entire operation of themachine. This uniformity of treatment makes possible the obtaining ofbest re :sults.

Likewise, I have provided means for preventing accumulation of lintwithin thecor ners or pockets of the machine casing and means also forpreventing escape of lint out- :side of the casing. Thus besidesproviding passed into the heating chamber without the detrimental resultwhich is produced in some of the present forms of such devices.

What I claim is:

1. In a structure of the character described,

the combination of a chamber having an outlet through which lint ladenair is adapted to be passed, a lint storage reservoir having a mouth atits upper end, means arranged in the vicinity of said chamber outlet forcollecting lint from the air passing therethrough, means fortransferring lint from said collecting means toa point above the mouthof said stor age reservoir, whereby said lint will fall by gravity intosaid reservoir, and means above said reservoir mouth and adapted forcooperative engagement with said transfermeans for insuring the removalof lint therefrom.

2. In a structure of the character described, the combination of achamber having an outlet through which lint laden air is adapted to bepassed, a lint storage reservoir, means arranged in the vicinity of saidchamber outlet for collecting lint from the air passing therethrough,means for delivering lint from said collecting means to said reservoir,means for indicating when a predetermined quantity of lint has beenstored in said reservoir, and

means for automatically operating said inclicating means.

3. In a structure of the character described, the combination of achamber having an outlet, means for producing a flow of lint laden airthrough said outlet, a lint storage reservoir, means arranged in thevicinity of said outlet for collecting lint from the air passingtherethrough, means for delivering lint from said collecting means tosaid reservoir, and means for automatically stopping the operation ofsaid air flow producing means when a predetermined quantity of lint hasbeen stored in said reservoir.

l. In a structure of the character described, the combination of achamber having an out let, means for producing a flow of lint laden airthrough said outlet, a lint storage reservoir, means arranged in thevicinity of said outlet for collecting lint from the air passingthere-through, means for delivering lintfrom said collecting means tosaid reservoir, and means for automatically producing a signal when apredetermined quantity of lint has been stored in said reservoir andthereafter stopping operation of said air flow producing means when afurther predetermined quantity of lint has been stored in saidreservoir.

In a structure of the character described, a chamber provided with anoutlet through which lint laden air is adapted to be passed, a rotatablemember in said chamber, a lint storage reservoir, means arranged in thevicinity of said chamber outlet for collecting lint from the air passingtherethrough, means for deliverin lint from said collecting means tosaid reservoir, and means for automatically stopping the rotation of therotatable memher when a predetermined quantity of lint has been storedin said reservoir.

6. In a structure of the character described, a chamber provided with anoutlet through wl ich lint laden air is adapted to be passed, arotatable member in said chamber, a lint storage reservoir, meansarranged in the vicinity of said chamber outlet for collecting lint fromthe air passing therethrough, means for (.elivering lint from saidcollecting means to said reservoir, and means for automaticallyproducing a signal when a predetermined quantity of lint has been storedin said reservoir and thereafter stopping the rotation of said rotatablemember when a further predetermined quantity of lint has been stored insaid reservoir.

7. In a structure of the character described, a chamber provided with anoutlet, a work receiving member arranged in said chamber, means forrotating said work receiving member, means adapted when actuated forproducing flow of lint laden air through said outlet, means foractuating said air flow producin means, a lint storage reservoir, meansarranged in the vicinity of said chamber outlet for collecting lint fromthe air passing therethrough, means for delivering lint from saidcollecting means to said. reservoir, and means for automaticallyproducing a signal when a predetermined quantity of lint has been storedin said reservoir, and thereafter stopping the operation of said meansfor rotating the work receiving meml'ier and the means for actuatingsaid air flow producing means when a further predetermined quantity oflint has been stored in said reservoir.

8. In a structure of the character described. the combination of achamber having an out let through which lint laden air is adapted to bepassed, a lint storage reservoir having a mouth at its upper end, meansarranged in the vicinity of said chamber outlet for collecting lint fromthe air passing therethrough, means for transferring lint from saidcollecting means to a point above the mouth of said storage reservoir,whereby said transferred lint will fall by gravity into said reservoir,and a cleaning and packing member inclined upwardly and forwardly towardthe lint collecting means so that it overhangs the mouth of saidreservoir, said cleaning and packing member being adapted forco-0perative engagement with the lint transferring means when said meansis above the mouth of said reservoir.

9. In a structure of the character described, lint transfer means,operating means therefor including a rotatable sprocket wheel and achain traveling thereover and both normally exposed to lint, and meansco-operating with said sprocket wheel for removing lint therefrom.

10. In a structure of the character described, the combination of a linttransfer membenoperating means therefor including a chain upon whichsaid lint transfer member is mounted and a sprocket wheel over whichsaid chain travels, and felt strips engaging opposite sides of saidsprocket wheel for preventing the accumulation of lint thereon.

11. In a structure of the character described, a chamber having anoutlet, a rotatable w0rk-receiving member in said chamber, means forproducing a flow of lint laden air through said outlet, a lint storagereservoir, means arranged in the vicinity of said outlet for collectinglint from the air passing therethrough, means for delivering lint fromsaid collecting means to said reservoir, and means for automaticallystopping the operation of said air fiow producing means and forautomatically stopping the rotation of the work-receiving member when apredetermined quantity of lint has been stored in said reservoir.

In testimony whereof I hereby affix my signature.

ROBERT C- PAULY.

